• Title, Summary, Keyword: leukocytes

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Inflammation Scan Using $^{99m}Tc-HMPAO$ Labelled Leukocytes ($^{99m}Tc-HMPAO$를 이용한 자가백혈구표지 및 그를 이용한 염증병소의 스캔)

  • Yang, Woo-Jin;Chung, Soo-Kyo;Shinn, Kyung-Sub;Bahk, Yong-Whee;Kim, Hoon-Kyo
    • The Korean Journal of Nuclear Medicine
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    • v.23 no.2
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    • pp.219-223
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    • 1989
  • Inflammation scan using radiolabelled leukocytes has high sensitivity and specificity. Several methods for labelling leukocytes have been evaluated using P-32 diisopropyl fluorophosphate (DFP-32), H-3 thymidine, Cr-51 chromate, Ga-67 citrate and Tc-99m-sulfur colloid. In-111-oxine has proved so far to be the most reliable agent for labelling leukocytes. In-111-oxine is, however, expensive, not easily available when needed, and its radiation dose to leukocytes is relatively high. Moreover, resolution of the resultant image is relatively poor. Tc-99m is still the agent of choice because of, as compared with the indium, its favorable physical characteristics, lower cost and availability. Now the technique for labelling the leukocytes with technetium is successfully obtained using the lipophilic HAPAO with higher efficiency for granulocytes than for other cells. With this technique it is possible to label leukocytes in plasma to improve the viability of the leukocytes. Inflammation scan using Tc-99m-HMPAO has been evaluated in several laboratories, and difference in methods for separation and labelling accounts for difference in efficiency, viability and biodistribution of the labelled leukocytes. We performed inflammation scan using leukocytes labelled with Tc-99m-HMPAO in three dogs 24 hours after inoculation of live E. Coli and A. Aureus in their right abdominal wall. We separated mixed leukocytes by simple sedimentation using 6% hetastarch (HES) and labelled the leukocytes with Tc-99m-HMPAO in 20% cell free plama diluted with phosphate buffer solution(Fig. 1). Uptake was high in the liver and spleen but is was minimal in the lungs on whole body scan. Kidneys and intestine showed minimal activity although it was high in the urinary bladder(Fig. 2). Uptake of labelled leukocytes in the inflammation site was do(mite on 2 hour-postinjection scan and abscess was clearly delineated on 24 hour-delayed scan with high target-to-nontarget ratio(Fig. 3, 4). Inflammation scan using mixed leukocytes labelled with Tc-99m-HMPAO is very sensitive and specific in early detection of inflammation.

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Effects of Dietary Folate Content on Folate Concentration and DNA Strand Breaks after Alkaline Treatment in Immune Cells (식이엽산함량이 흰쥐의 면역세포의 엽산농도와 알칼리 처리후의 DNA 이중 나산선 잔존율에 미치는 영향)

  • 장남수
    • Journal of Nutrition and Health
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    • v.32 no.6
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    • pp.654-660
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    • 1999
  • Folate, a precursor of the coenzyme tetrahydrofolate, plays an important role in DNA replication and cell proliferation, and thus could influence rapidly proliferating immune cells such as leukocytes and splenocytes. The effects of dietary folate on folate concentrations of plasma, thymus, spleen and leukocytes were investigated in rats. The animals were raised for 6 weeks on semipurifed experimental diets containing 0mg, 2mg, 4mg, 8mg folate/kg diet. Folate concentrations were determined microbiologically using Lactobacillus casei(ATCC 7469), and DNA strand breaks produced by alkaline treatment were analyzed fluorometrically. When compared to folate adequate diet, the folate deficient diet(0mg folate/kg diet) resulted in lowest folate levels in plasma, thymus, spleen and leukocytes, and the highest DNA strand breaks in spleen cells and leukocytes. Dietary folate levels significantly increased folate concentrations of immune tissues, leukocytes, and the plasma in a dose dependent manner, folate concentrations being highest with a diet providing 8mg folate/kg diet. The percentages of the double strand DNA remaining in the splenocytes and leukocytes after alkaline treatment were significantly increased with higher amounts of dietary folate in a dose dependent manner. Folate intakes of 8mg than 4mg/kg diet was found to be more effective in the prevention of DNA strand breaks. The results of this study suggest that increased folate above the requirement level could improve DNA stabilities in immune cells.

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Pharmacological Activities of Flavonoids(IV) - Inhibitory Actions of Leukocyte Migration, Superoxide Anion Production and Lipid Peroxidation - (Flavonoids의 약리작용 (IV) - 백혈구유주, superoxide anion 및 과산화지질 생성 억제작용 -)

  • 김창종;정현삼;정진모
    • YAKHAK HOEJI
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    • v.35 no.3
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    • pp.165-173
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    • 1991
  • Effects of eight flavonoids and their related compounds on leukocytes migration, superoxide anion production and lipid peroxidation in the phagocytosis of latex beads or E. coli by guinea pig peritoneal exudate cells were studied in vitro. It shows that most of flavonoids generally inhibited the leukocytes migration and production of superoxide anion and malonedialdehydes. Their inhibitory activities in the phagocytosis of latex beads had more active than that of E. coli. Quercetin has the most inhibitory activity in leukocytes migration and production of superoxide anion and lipid peroxides at the concentration of 1, 2 and 10 $\mu{M}$. Catechin and rutin at the concentration of 2 and 10 $\mu{M}$ inhibited significantly the production of superoxide anion and lipid peroxides. Flavone, catechin, naringin and rutin at the concentration of 2 and 10 $\mu{M}$ inhibited significantly the leukocytes migration.

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Effects of Astragali Radix extract on the Cell Mediated Immunotoxicity of Zinc Chloride (염화아연의 세포성 면역독성에 미치는 황기 추출물의 효과)

  • 채병숙;신태용
    • YAKHAK HOEJI
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    • v.43 no.1
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    • pp.98-103
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    • 1999
  • Effects of Astragali Radix extract (AG) on the cell mediated-and nonlpecific immunotoxic responses of zinc chloride (Zn) were studied usign ICR mice. Mice were divided into 4 groups (10 mice/group), and Zn was given to the mice 1 hr after i.p. injection with 0.5g/kg of AG by i.p. injection daily for 10 days at a dose of 25 mg/kg. Immune responses on the responses on the relative weight of thymus, delayed-type hypersensitivity to SRBC (DTH), phagocytic activity and circulating leukocytes were evaluated. Zn treatment decreased body weight gain, the relative weight of thymus, DTH and circulating leukocytes compared with those in controls. AG treatment increased DTH, phagocytic activity and circulating leukocytes compared with those in controls. Combination of AG and Zn increased DTH and circulating leukocytes compared with those in controls, but decreased body weight gain and the relative weight of thymus. These findings indicated that AG decreased immunotoxicity of Zn on the DTH and circulating leukocytes.

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Study on Improved Diluting Fluids for Direct Counts of Total Leukocyte, Eosinophil and Other Leukocytes (총백혈구수(總白血球數), 호산구수(好酸球數) 및 기타 백혈구수(白血球數)의 직접계산(直接計算)을 위한 개량희석액(改良稀釋液)에 관한 연구(硏究))

  • Lee, Bang Whan
    • Korean Journal of Veterinary Research
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    • v.16 no.2
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    • pp.105-114
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    • 1976
  • The study was conducted for an attempt to improve the diluting fluid for total leukocyte count, and to prepare a multipurpose diluting fluid for concurrent direct counts of total leukocytes, eosinophils and the other leukocytes. Through the experiment, two better fluids for total leukocyte count of blood of human, bovine, swine, canine and rabbit were selected, and which conserved cell morphology of leukocytes better than $T{\ddot{u}}rk$-solution. Each formula of two fluids were given as under R I and R II. Formula of multipurpose diluting fluid selected in the experiment was given as under III. With this fluid, direct counts of total leukocytes, eosinophils and probably basophils of blood of human, bovine and swine were practicable concurrently in the same counting chamber of a hemocytometer. In this fluid, eosinophils were stained red in the part of eosinophilic granules and blue in other part of cell, and basophils were stained dark blue like as a lump of black granules, staining three other leukocytes faint blue. Eosinophils of canine blood were not so enough red those in other animal and human and eosinophils of rabbit blood were not distinguishable from pseudoeosinophils in this fluid.

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Effects of Pre-conditioning dose on the Immune Kinetics and Cytokine Production in the Leukocytes Infiltrating GVHD Tissues after MHC-matched Transplantation

  • Choi, Jung-Hwa;Yoon, Hye-Won;Min, Chang-Ki;Choi, Eun-Young
    • IMMUNE NETWORK
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    • v.11 no.1
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    • pp.68-78
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    • 2011
  • Background: Graft-versus-host disease (GVHD) is a huddle for success of hematopoietic stem cell transplantation. In this study, effects of irradiation dose on immune kinetics of GVHD were investigated using B6 ${\rightarrow}$ BALB.B system, a mouse model for GVHD after MHC-matched allogeneic transplantation. Methods: BALB.B mice were transplanted with bone marrow and spleen cells from C57BL/6 mice after irradiation with different doses. Leukocytes residing in the peripheral blood and target organs were collected periodically from the GVHD hosts for analysis of chimerism formation and immune kinetics along the GVHD development via flow cytometry. Myeloid cells were tested for production of IL-17 via flow cytometry. Results: Pre-conditioning of BALB.B hosts with 900 cGy and 400 cGy resulted in different chimerism of leukocytes from the blood and affected survival of GVHD hosts. Profiles of leukocytes infiltrating GVHD target organs, rather than profiles of peripheral blood leukocytes (PBLs), were significantly influenced by irradiation dose. Proportions of IL-17 producing cells in the infiltrating $Gr-1^+$ or $Mac-1^+$ cells were higher in the GVHD hosts with high does irradiation than those with low dose irradiation. Conclusion: Pre-conditioning dose affected tissue infiltration of leukocytes and cytokine production by myeloid cells in the target organs.

$^{99m}Tc-HMPAO$ Labelled WBC Scan in Experimental Abscess by Labelling Autologous Leukocytes With In-House-Synthesized HMPAO (국내 합성한 HMPAO 이용 $^{99m}Tc$ 표지 백혈구를 이용한 실험적 농양 스캔)

  • Lee, Dong-Soo;Shin, Hyung-Sik;Ahn, Cu-Rie;Chung, Jung-Key;Lee, Myung-Chul;Choi, Kang-Won;Koh, Chang-Soon;Jung, Jae-Min;Chung, Eun-Ju
    • The Korean Journal of Nuclear Medicine
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    • v.25 no.2
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    • pp.252-258
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    • 1991
  • With HMPAO we have synthesized in our laboratory, we labelled $^{99m}Tc$ to canine leukocytes. Experimental abscess made by subcutaneous injection with Staphylococcus aureus was imaged with these $^{99m}Tc$ labelled leukocytes. Labelling efficiency of HMPAO with $^{99m}Tc$ was $66.2%{\pm}14.6%$ (N=9). Labelling efficiency of leukocytes with $^{99m}Tc-HMPAO$ was $54%{\pm}7.7%$ (N=7). Cell bound radioactivity in $^{99m}Tc-HMPAO$ labelled leukocytes was around 80% when these cells were incubated in plasma in vitro at $37^{\circ}C$ for 5 hours. In vivo cell bound activity was over 80% at 24 hours after injection. One day and four days after inoculation, uptake at the inflammatory focus was found with $^{99m}Tc$ labelled leukocytes. Uptake showed up in 4 hour image, and the uptake at the lesion was most prominent in 24 hour image. These findings show that in-house-synthesized HMPAO could be used for labelling leukocytes with $^{99m}Tc$, and that s$^{99m}Tc-HMPAO-labelled$ leukocytes were so stable and viable that inflammatory focus could be visualized with these $^{99m}Tc-labelled$ leukocytes.

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The Effect of Panax Ginseng Extract on the Immunotoxicity of Cimetidine in Mice (마우스에 있어서 Cimetidine의 면역독성에 미치는 인삼유출물의 영향)

  • 안영근;이상근
    • Environmental health and toxicology
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    • v.6 no.1_2
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    • pp.25-38
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    • 1991
  • The immunopotenciating effects of petroleum ether extract, ethanol extract and butanol fraction of panax ginseng on the immunotoxicity of Cimetidine were investigated in ICR mice. Immune responses were evaluated by antibody production, Arthus reaction, delayed type hypersensitivity (DTH), and rosette forming cell (RFC) in mice, sensitized and challenged with sheep red blood cells. To investigate the change of the non-specific immune responses, phagocyte activity and number of leukocytes in peripheral blood were measured also. The results of this study are summarized as followings; 1. Cimetidine treated group as compared with normal group generally decreased HA, 2-MER, RFC, number of circulating leukocytes and phagocyte activity whereas in-creased Arthus reaction and DTH. 2. The panax ginseng petroleum ether extract combined administration group as compared with the control group remarkably increased HA, 2-MER, number of circulating leukocytes and phagocyte activity. 3. The panax ginseng ethanol extract combined administration group as compared with the control group remarkably increased Arthus reaction, DTH, HA, RFC, number of circulating leukocytes and phagocyte activity. 4. The panax ginseng butanol fraction combined administration group as compared with the control group remarkably increased Arthus reaction, HA, 2-MER, RFC, number of circulating leukocytes and phagocyte activity.

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The Effect of Supplementary Selenium on Leukocytes and HSP70 Expression after Half-Body Immersion (반신욕 중 셀레늄 섭취가 백혈구와 HSP70 발현에 미치는 영향)

  • Shin, Young-Oh;Han, Min-Kyu;Lee, Jeong-Beom;Um, Byung-Hun
    • Journal of Nutrition and Health
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    • v.44 no.5
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    • pp.378-383
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    • 2011
  • This study examined the effect of supplementary selenium on leukocytes and heat shock protein (HSP) 70 expression in serum during half-body immersion. The subjects were male college tennis athletes. All subjects participated in two repeated experiments with a 1 week interval. During the 30 min intermittent half-body immersion, subjects were given 500 mL of water with or without selenium (100 ${\mu}g$). Blood samples were taken from the antecubital vein, and differential counts were made. Serum HSP70 protein was analyzed using a commercial ELISA kit. After half-body immersion, leukocytes and lymphocytes increased significantly but neutrophils decreased significantly in both trials (with or without selenium). Selenium supplementation, compared with placebo, decreased levels of leukocytes, neutrophils, and monocytes, but not lymphocytes, to the resting level or below 60 min after immersion. Only lymphocytes continued to increase in both trials during the recovery period. Serum HSP70 protein level did not change after immersion, but it decreased 60 min after immersion with the administration of selenium. In conclusion, supplementary selenium reduced the systemic immune response and serum HSP70 protein accumulation after half-body immersion.

Appearance of globule leukocytes in tracheal and broncheal mucosa in Korean native cattle with pneumonia and rats experimentally infected with Klebsiella pneumoniae (폐렴우와 Klebsiella pneumoniae 실험적 감염 랫드의 기관 및 기관지 점막층에서 Globule leukocyte의 출현양상)

  • Park, Sang-joon;Lee, Cha-soo;Jeong, Kyu-shik
    • Korean Journal of Veterinary Research
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    • v.37 no.4
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    • pp.831-841
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    • 1997
  • The study was aimed at identifying the globule leukocytes (GL) of tracheal mucosa layer of Korean native cattle showing symptom of pneumonia which have died as enterotoxemia and normal Korean native cattle in Kyungpook local area. In another set of experiment, Isolated Klebsiella pneumoniae from suddenly died cattle specimens was subjected to rat for a determining globule leukocyte appearance by using histochemical and immunohistochemical method. In histochemical study, globule leukocytes generally was existed in all the case of postmortem of Korean native cattle and 3 heads of slaughtered cattle which showing symptoms of pneumonia and it showed significant increase in tracheal mucosa of rats experimentally infected with Klebsiella pneumoniae. These increased number of globule leukocytes was moderately remained on early infection stage and gradually decreased in timedependent manner after infection. The granule patterns were also determined as an acidmucopolysaccharide. In immunohistochemical study, serotonin intensity in the treacheal mucosaepithelial cells of rat experimentally infected observed a strong immunoreactivity during early infection and gradually decreased in dependent of infection stage while no IgE immunoreactivity observed. These data show that globule leukocytes were increased in a pneumonia, therefore it was considered as a valuable cell that was associated with early stage of inflammatory response.

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